package com.onetoall.yjt.widget.row;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.GridView;

/**
 * Created by shaomengjie on 2016/10/11.
 */

public class MyGridView extends GridView {
    public MyGridView(Context context) {
        super(context);
    }

    public MyGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyGridView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    private OnMyGridViewListener listener;

    @Override
    /**
     * 重写该方法，达到使GridView适应ScrollView的效果
     */
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
                MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        if(listener!=null){
            listener.onLayout(getWidth(),getHeight());
        }
    }

    public void setOnMyGridViewListener(OnMyGridViewListener listener) {
        this.listener = listener;
    }

    public interface OnMyGridViewListener {
        void onLayout(int width, int height);
    }
}
